18499207 has 2 divisors, whose sum is σ = 18499208. Its totient is φ = 18499206.

The previous prime is 18499183. The next prime is 18499231. The reversal of 18499207 is 70299481.

It is a balanced prime because it is at equal distance from previous prime (18499183) and next prime (18499231).

It is a cyclic number.

It is not a de Polignac number, because 18499207 - 2¹⁵ = 18466439 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18499207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18499277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9249603 + 9249604.

It is an arithmetic number, because the mean of its divisors is an integer number (9249604).

Almost surely, 2^18499207 is an apocalyptic number.

18499207 is a deficient number, since it is larger than the sum of its proper divisors (1).

18499207 is an equidigital number, since it uses as much as digits as its factorization.

18499207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 18499207 is about 4301.0704481559. The cubic root of 18499207 is about 264.4748446339.

The spelling of 18499207 in words is "eighteen million, four hundred ninety-nine thousand, two hundred seven".